As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FAULT LIGHT ILLUMINATED DURING APU START AT FL380. FAULT LIGHT EXTINGUISHED WITHIN 5 MINUTES. SUCCESSFUL START AT FL340, NO APU CAUTION LIGHTS. ACFT GROUNDED. ACCOMPLISHED FIM TASK 49-40-TASK 801. FOUND FAULT 49-41010-1 START AGO. NO CURRENT FAULTS SHOWING. PERFORMED APU START AND NO CURRENT FAULT OR FAULT 49-41010 IN LAST APU CYCLE. NO FURTHER ACTION REQUIRED IAW FIM.